Vise



June 9, 92 1,541,715

B.M.JOHNSON VI SE Filed May 20, 1924 Patented June 9, 1925.

BEN M. JOHNSON, OF CHICAGO, ILLINOIS.

VISE.

Application filed May 20, 1924. Serial No. 71 1,?17.

To all whom it may concern:

Be it known that 1, BEN M. JorrNsoN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Vise, of which the following is a specification.

This invention appertains to tools and more particularly to an improved vise for gripping round and polygonal shaped work, and the primary object of the inventionis to provide an improved device of the above character, which will be of a compact and strong construction, and which can be connected with a bench to be used as a bench vise, or which can be used as an ordinary hand vise.

A further object of the invention is the provision of novel pivoted gripping jaws carried by the face of the vise, and means for normally holding the jaws in an extended. position so that relatively large pipe can be readily gripped, the jaws also serving as means for automatically releasing the pipe when the sliding jaw has been moved to its inoperative position.

A still further object of the invention is to provide an improved device of the above,

character, which will be durable and efficient :in. use, one that will be simple and easy to manufacture, and one which can be placed upon the market at a small cost.

\Vith these and other objects in view, the invention consists in the novel construction, arrangement, and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings, in which drawings:

Figure 1 is a side elevation of the improved device, showing parts thereof broken away, and the holding plate in cross section;

Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1; and

Fig. 3 is a horizontal section taken on the line 33 of Fig. 1 illustrating the means connecting the operating screw with the movable jaw.

Referring to the drawings in detail, wherein similar reference characters designate cor- 50 responding parts throughout the several views, the letter A generally-indicates the improved device which comprises a rigid base plate 5 on which is formed at one end thereof the upstanding rigid post 6. The base plate 5 can be of any desired size and can be removably mounted on a holding plate 8 which can be screwed or otherwise secured to one end of a bench. The plate 5 can be attached to plate 8 in any desired way, and as shown the plate 8 has formed thereon a hold- 1ng rib 9 against which the base plate 5 is adapted to rest. The base plate 5 can *be held-against the rib 9 by the use of a suitable winged nut .10 and screw 11. As many winged nuts and screws 10 and 11 can be utilized as is necessary which is ofcourse readily understood. a

The base plate 5 has formed thereon transversely thereof the upstanding rigid rib 12 which is adapted to support the lower jaw 13 of the vise. The lower aw 13 of the vise embodies a pair of independent arcuate sections 14; and 15 respectively which when placed together as shown in Figures 1 and 2 of the drawings form substantially a half of a circle. These jaw sections 14; and 15 are provided with toothed working faces 16 for gripping the work, as is the usual practice. These jaw sections are also provided with pivot cars 17 which are adapted to receive the rigid lug 18 formed on the rib 12. Pivot pins 19 are utilized for p ivotally connecting the jaw sections 14 and 15 with the lugs 18. These jaw sections are normally held in araised position away from the base plate 5 and the rib 12 by means of expansion springs 20 which are fitted within suitable recesses or pockets 22 formed in the upper face of the base plate 5.

The inner face of the post 6 is provided with a vertically extending groove 21 and the side walls 22 of the groove are adapted to have fitted thereagainst guide ribs 23 which are removably held in place by machine screws 24- or the like which are threaded into the post 6. These guide ribs 23 have their inner faces beveled defining a substan tially dove tail-shaped guideway 25 in which is slidably mounted the dove tail shaped head 25 which is formed on the movable gripping jaw 26. The lower face of the gripping jaw 26 is arcuate shaped and provided with gripping teeth 27. An overhanging head 28 is formed on the upper end of the post 6 and this head is arranged directly above the rib 12 and the jaws 13. Depending spaced flanges 29 are formed on the head 28 and when the jaw 26 is in raised or partly raised position the jaw 26 is adapt ed to lie between the flanges 29 which serve The extreme upper end of the adjustingscrew 30 carries a polygonal shaped guide sleeve 33 inawhich is slidably mounted the operating handle 34..

By this-construction. it-can be seen that upon movement of the operating handle Bl :that theinovable jaw 26 can be moved toward or-awayfrom the lower jaw or inner jaw 13. The jaw sections 14 and 15 are normally urged outwardly and away from each other in order to normally hold the same in a position for receiving relatively large sizes of work and when the work has been released between the jaws 26 and 13 andv the jaw 26 has been moved entirely from out of engagement with the work, it is iobvions that the springs will serve as means for slightly raising the work andmoving the same away from the jaw sections 14' and 15 which will serve asmeans for moving the jaw faces from out of gripping contact with the work.

From the foregoing description, it'can be seen that I have provided an improved device of simple and strong character which can be used on all types of work.

Changes in details may be made without departing from the spirit or the scope of this invention, but what I claim as new is:

In a vise, a base, an upstanding post formed on the base, a head formed on the outer end of the post arranged in spaced parallel relation to the base, a jaw, a dovetail-shaped guide head formed on one side of the jaw,. a dovetail-shaped guideway formed on the inner face of the post rcceiving the said dovetail-shaped guide head, an operating screw carried by the head formed on the post, a handle for operating the screw, means detachably associating the inner end of the screw with the jaw, an inner jaw including a pair ofsect'ions, means pivotallysecuring. the sections intermediate their ends to the base, and springs engaging the meeting ends of the sections'of the=inner jaw for normally holding the same in a raised position relative to the base.

Intestiniony whereof I atlix my signature in presence of two witnesses.

BEN M.- JOHNSON.

lVitn esses lllARGARET G. DONAHUE; FRED lVlIITCOMIL 

